macOS desktop client crashes after opening

Currently my desktop client for macOS crashes after opening. I’m not sure whether it is due to an update of the nextcloud client or macOS security updates I installed recently. All I know is it was working before and now it’s not.

I’ve tried reinstalling both the current and legacy version, but it keeps crashing. Removing the app from my computer is impossible as some processes of the app are still running in the background, preventing it from being moved to the trash.

I’m a bit confused what I should do next to get it running again.

macOS: 10.13.6
nextcloud app latest build and 2.6.2 legacy